\begin{table}[h] \centering
\newcolumntype{C}{>{\centering\arraybackslash}X}

\caption{Simulation of bias in allocating attacks by unknown perpetrator}
\label{Atab:allocationbias}
\begin{tabularx}{\textwidth}{lCC}

\toprule
{Lag of hit}&{Lower bound implied 96\% CI}&{Upper bound implied 96\% CI} \tabularnewline
\midrule\addlinespace[1.5ex]
t+1&.1366357&.4089971 \tabularnewline
t+2&.2682199&.5916294 \tabularnewline
t+3&.3482034&.5850728 \tabularnewline
t+4&.0417288&.382581 \tabularnewline
t+5&-.0357263&.2542275 \tabularnewline
t+6&.1377445&.4724822 \tabularnewline
\bottomrule \addlinespace[1.5ex]

\end{tabularx}
\begin{flushleft}
\footnotesize This table displays 2th and 98th percentile of simulated coefficients obtained when allocating terrorist attacks with an unknown perpetrator to terrorist groups included in this study based on the 3-month rolling share of worldwide terrorist attacks with a known perpetrator that these groups committed
\end{flushleft}
\end{table}
